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A. P. JOHNSON,- OF EDWARDS, NEW'YORK."

Leam Paten; No; 61,667, ma January 29, 18er.

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TO ALL WIIOM IT MAY CONGERN; Y

Be it known Ithat I, A. JOHNSON, of Edwards, in the .county of St. Lawrence, and State of New York, have invented a new and improved Water-Wheel; and I do hereby declare that the following is a'full, clear, and exact description thereof, which will enable others-skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side view of my invention, Ithe casev being bisected in alongitudinal vertical direction.

Figure 2, a transverse vertical section'of the same, taken in the line x x, fig. l.

Similar letters of reference indicate like parts.

This'invention relates to a new and improved water-wheel, of that class in which screw or spiral buckets are employed; and it consists in providing the wheel case with a tube containing a valve which is automatically opened where the gates are closed to admit 'of the discharge of the water from the case and draught-tube.

A represents a case which has a-circular openingfB-,vin each end of it, and C is 'a shaft which passes longitudinally through the case A, .the bearings a a of said shaft b-ing at the outer side of the case A. On this shaft C there are placed two wheels, D D, composed of spiral buckets 6 b, two' or more, two being shown in the drawings. These buckets b bhave what may be termed a gaining twist, the pitch gradually decreasing from. the front to the inner ends of the buckets, and the wheels are fitted in circular openings in the ends of the case A, as shown clearly in fig. 1. The outer endsc of the buckets I1 ai'e sharp or knife-edged, so that they will cut drift-'wood which may pass into the Wheels, and admit of the same passingrthrough the wheels without the liability of clogging or choking them up. The wheels are provided with conical hubs ax, which force the water to the outerl parts of the wheels, where there is a greater leverage power. E represents a draught-tube, the upper end of which communicates with the lower` parth'pf the caserA. This draught-tube extends down into the tail-race, as usual. The gates of the Wheels are attached toeach end'offthe case A. These gates are composed' each of two or more parts, F F, the lower ends of which are pivoted to' the lower. part of the case,

as shown at d d, and the upper ends of the parts FF are connected by bars G G to the ends of a horizontal bar',

H, the bars being attached to the parts F of the gates and tb the ends of the bar H by pivots ef The horizontal bar H hasa vertical bar, I, framed centrally int'o it, 'the latter being fitted between guides on the top of the case. The Abar I has a rod, g, projecting horizontally from it to ,lift orV open a! valve, J, on the ltop ot' a vertical tube, K, which communicates with the case A.

lIt will be seen from the above description that by raising the' bar I the gates will be closed, the two parts F F of each-gate coming in contact and completely closing the outer sides of the openings in which the wheels worker rotate, the gates being opened by shoving down the bar I. The parts F F of the gates are easily operated, the .bars G G, in connection with the parts F F, acting like toggles. i Inv raising the bar I to close the gates, therod g, as the gates close, raises or opens the valve J, and the water within the case auddraught-tube is allowed topass down'into the tail race; The case A is placed within a suitable penstoek, suicient space being allowed at each end of the case for the water to enter and act upon or against thewheels. The gaining twist of the spiral buckets causes the Water to act in the most favorable manner upon or against the wheels.

Having thus described my invention, what I claimas new, and desire to secure by Letters'Patent, is- The tube K, provided with the valve J, operated automatically from the gate-rod I, substantially as shown and described;

A A. P. JOHNSON.

Witnesses:

S. M. GARDNEn,J1-., Jo'sEPH -Bnonm 

